Help!!!

I have a problem updating field on an RDB linked server.

The code I am running is:
begin tran
update openquery(TAVNIOT, 'select TAVNIT, TAV_STAT from
TAVNIOT where TAVNIT = 1') set TAV_STAT = 8 where TAVNIT =
1
commit

The error I am getting is:
Server: Msg 7391, Level 16, State 1, Line 2
The operation could not be performed because the OLE DB
provider 'MSDASQL' was unable to begin a distributed
transaction.
OLE DB error trace [OLE/DB Provider 'MSDASQL'
ITransactionJoin::JoinTransaction returned 0x8004d00a].

I understand the reason for that error but wondering, is
there a way around it, such as avoiding the DTC?
I tried setting the "Non transacted updates" on the linked
server provider, with no results.
The reason this is transacted is because the code must be
run from a trigger.

Help!!!